Naturwissenschaften

, Volume 94, Issue 9, pp 759–768 | Cite as

Artiodactyls from the Pondaung Formation (Myanmar): new data and reevaluation of the South Asian Faunal Province during the Middle Eocene

  • Grégoire Métais
  • Aung Naing Soe
  • Laurent Marivaux
  • K. Christopher Beard
Original Paper

Abstract

Although Asia is thought to have played a critical role in the radiation of artiodactyls, the fossil record of stem selenodonts (“dichobunoids”) remains dramatically poor in tropical Asian regions. In this study, we report a new dichobunid genus and species Cadutherium kyaukmagyii and a new basal ruminant genus and species Irrawadymeryx pondaungi, from the late Middle Eocene Pondaung Formation, Central Myanmar. Although the scarcity of the present material prevents any attempts to investigate the phylogenetic relationships of Cadutherium with contemporaneous forms from other Holarctic landmasses, this new form shed new light on the diversity of these small rabbit-like ungulates during a key period of their evolutionary history. Reexamination of the small-bodied artiodactyls from Pondaung leads us to propose new identifications of certain published specimens and, in turn, to investigate the temporal and geographic distribution of taxa recognized in the Pondaung Formation. Although fragmentary, these potential new taxa reveal an unsuspected diversity of small forms among artiodactyls of Pondaung. This addition to the Eocene record of dichobunoids and early ruminants provides further insight in the diversity of dental patterns among small artiodactyls from the Pondaung Formation and attests to the antiquity of these groups in Southeast Asia.

Keywords

Artiodactyla Dichobunoid Eocene Pondaung Formation Myanmar 

References

  1. Soe AN, Myitta, Tun ST, Aung AK, Thein T, Marandat B, Ducrocq S, Jaeger J-J (2002) Sedimentary facies of the late Middle Eocene Pondaung Formation (central Myanmar) and the palaeoenvironments of its Anthropoid Primates. Comptes Rendus Palevol 1:153–160Google Scholar
  2. Aung AK (1999) Revision on the stratigraphy and age of the primates-bearing Pondaung Formation. In: Pondaung Fossils Expedition Team (ed) Proceedings of the Pondaung Fossils Expedition Team. Office of Strategic Studies, Ministry of Defence, pp 131–151Google Scholar
  3. Aung AK (2003) The primate-bearing Pondaung Formation in the upland area, north-west of Central Myanmar. In: Ross C, Kay RF (eds) Anthropoid origins: new visions. Kluwer, New York, pp 33–47Google Scholar
  4. Benammi M, Soe AN, Tun T, Bo B, Chaimanee Y, Ducrocq S, Thein T, Wai S, Jaeger J-J (2002) First magnetostratigraphic study of the Pondaung Formation: implications for the age of the Middle Eocene anthropoids of Myanmar. J Geol 110:748–757CrossRefGoogle Scholar
  5. Bender F (1983) The geology of Burma. Gebrüder Borntraeger, Berlin, p 293Google Scholar
  6. Colbert EH (1938) Fossil mammals from Burma in the American Museum of Natural History. Bull Am Mus Nat Hist 74:255–434Google Scholar
  7. Ducrocq S (1994) An Eocene Peccary from Thailand and the biogeographical origins of the Artiodactyl family Tayassuidae. Palaeontology 37:765–779Google Scholar
  8. Ducrocq S, Chaimanee Y, Suteethorn V, Jaeger J-J (1997) First discovery of Helohyidae (Artiodactyla, Mammalia) in the Late Eocene of Thailand: a possible transitional form for Anthracotheriidae. Comptes Rendus de l’Académie des Sciences de Paris, Series IIA: Earth and Planetary Science 325:367–372CrossRefGoogle Scholar
  9. Ducrocq S, Soe AN, Benammi M, Chaimanee Y, Tun T, Thein T, Jaeger J-J (2000) First record of an Anthracobunidae (Mammalia, ?Tethytheria) from the Eocene of the Pondaung Formation, Myanmar. Comptes Rendus de l’Académie des Sciences de Paris, Series IIA: Earth and Planetary Science 330:1–6CrossRefGoogle Scholar
  10. Gabunia L (1973) On the presence of the Diacodexinae in the Eocene of Asia. Bulletin of the Academy of Sciences of the Georgian SSR 71:741–744Google Scholar
  11. Gentry AW, Hooker JJ (1988) The phylogeny of the Artiodactyla. In: Benton MJ (ed) The phylogeny of the tetrapods. Clarendon, Oxford, pp 235–272Google Scholar
  12. Gingerich PD, Russell DE, Sigogneau-Russell D, Hartenberger J-L (1979) Chorlakkia hassani, a new Middle Eocene dichobunid (Mammalia, Artiodactyla) from the Kuldana Formation of Kohat (Pakistan). Contribution from the Museum of Paleontology, the University of Michigan, vol 25, pp 117–124Google Scholar
  13. Guo J, Qi T, Sheng H-J (1999) A restudy of the Eocene ruminants from Baise and Yongle Basins, Guangxi, China, with a discussion of the systematic positions of Indomeryx, Notomeryx, Gobiomeryx and Prodremotherium. Vertebrata PalAsiatica 37:18–39Google Scholar
  14. Guo J, Dawson MR, Beard KC (2000) Zhailimeryx, a new lophiomerycid artiodactyl (Mammalia) from the late Middle Eocene of Central China and the early evolution of ruminants. J Mamm Evol 7:239–258CrossRefGoogle Scholar
  15. Holroyd PA, Ciochon RL (1994) Relative ages of Eocene Primate-bearing deposits of Asia. In: Fleagle JG, Kay RF (eds) Anthropoid origins. Plenum, New York, pp 123–141Google Scholar
  16. Holroyd PA, Ciochon RL (1995) A new artiodactyl (Mammalia) from the Eocene Pondaung sandstones, Burma. Ann Carnegie Mus 64:177–183Google Scholar
  17. Holroyd PA, Ciochon RL, Gunnell GF (2006) Phylogenetic relationships among late Middle Eocene to Early Oligocene Old World anthracotheriids. J Vertebr Paleontol 26:78ACrossRefGoogle Scholar
  18. Hooker JJ, Thomas KM (2001) A new species of Amphirhagatherium (Choeropotamidae, Artiodactyla, Mammalia) from the Late Eocene Headon Hill Formation of southern England and phylogeny of endemic European ‘anthracotherioids.’ Palaeontology 44:827–853CrossRefGoogle Scholar
  19. Janis CM (1993) Tertiary mammal evolution in the context of changing climates, vegetation, and tectonic events. Ann Rev Ecolog Syst 24:467–500CrossRefGoogle Scholar
  20. Janis CM (1997) Ungulate teeth, diets, and climatic changes at the Eocene/Oligocene boundary. Zoology 100:203–220Google Scholar
  21. Matthew WD, Granger W (1925a) New mammals from the Shara Murun Eocene of Mongolia. Am Mus Novit 196:1–11Google Scholar
  22. Matthew WD, Granger W (1925b) New mammals from the Irdin Manha Eocene of Mongolia. Am Mus Novit 198:1–10Google Scholar
  23. Meng J, McKenna MC (1998) Faunal turnovers of Palaeogene mammals from the Mongolian Plateau. Nature 394:364–367CrossRefGoogle Scholar
  24. Métais G (2006) New basal selenodont artiodactyls from the Pondaung Formation (late Middle Eocene, Myanmar) and the phylogenetic relationships of early ruminants. Ann Carnegie Mus 75:51–67CrossRefGoogle Scholar
  25. Métais G, Vislobokova IA (2007) Basal ruminants. In: Prothero DR, Foss SE (eds) The evolution of the artiodactyls. John Hopkins University Press, Baltimore (in press)Google Scholar
  26. Métais G, Benammi M, Chaimanee Y, Jaeger J-J, Tun T, Thein T, Ducrocq S (2000) Discovery of new ruminant dental remains from the Middle Eocene Pondaung Formation (Myanmar): reassessment of the phylogenetic position of Indomeryx. Comptes Rendus de l’Académie des Sciences de Paris, Series IIA: Earth and Planetary Science 330:805–811CrossRefGoogle Scholar
  27. Métais G, Chaimanee Y, Jaeger J-J, Ducrocq S (2001) New remains of primitive ruminants from Thailand: evidence of the early evolution of the Ruminantia in Asia. Zool Scr 30:231–249CrossRefGoogle Scholar
  28. Métais G, Qi T, Guo J, Beard KC (2005) A new bunoselenodont artiodactyl from the Middle Eocene of China and the early record of selenodont artiodactyls in Asia. J Vertebr Paleontol 25:994–998CrossRefGoogle Scholar
  29. Montgelard C, Catzeflis F, Douzery E (1997) Phylogenetic relationships of Artiodactyls and Cetaceans as deduced from the comparison of Cytochrome b and 12s rRNA mitochondrial sequences. Mol Biol Evol 14:550–559PubMedGoogle Scholar
  30. Pilgrim GE (1928) The Artiodactyla of the Eocene of Burma. Palaeontol Indica 8:1–39Google Scholar
  31. Pilgrim GE, Cotter GP (1916) Some newly discovered Eocene mammals from Burma. Rec Geol Surv India 47:42–77Google Scholar
  32. Prothero DR, Emry RJ (1996) The terrestrial Eocene–Oligocene transition in North America. Cambridge University Press, p 688Google Scholar
  33. Qiu Z (1978) Late Eocene Hypertragulids of Baise Basin, Kwangsi. Vertebrata PalAsiatica 16:7–12Google Scholar
  34. Sahni A, Bhatia SB, Hartenberger J-L, Jaeger J-J, Kumar K, Sudre J, Vianey-Liaud M (1981) Vertebrates from the Subathu Formation and comments on the biogeography of Indian subcontinent during the Early Paleogene. Bull Soc Géol Fr 23:689–695Google Scholar
  35. Scopoli GA (1777) Introductio ad historiam naturalem sistens genera lapidum, plantarum et animalium hactenus detecta, caracteribus essentialibus donata, in tribus divisa, subinde ad leges naturae. Gerie, Prag, pp 1–506Google Scholar
  36. Simpson GG (1945) The principles of classification and a classification of mammals. Bull Am Mus Nat Hist 85:1–350Google Scholar
  37. Stamp LD (1922) An outline of the Tertiary geology of Burma. Geol Mag 59:481–501CrossRefGoogle Scholar
  38. Stehlin HG (1909) Remarques sur les faunules de mammifères de l’Eocène et de l’Oligocène du Bassin de Paris. Bull Soc Géol Fr 9:488–520Google Scholar
  39. Stucky RK (1998) Eocene bunodont and bunoselenodont Artiodactyla (“dichobunids”). In: Janis CM, Scott KM, Jacobs LL (eds) Evolution of Tertiary mammals of North America. Cambridge University Press, Cambridge, pp 358–374Google Scholar
  40. Sudre J (1978) Les Artiodactyles de l’Eocène moyen et supérieur d’Europe Occidentale; systématique et évolution. Université des Sciences et Techniques du Languedoc, Montpellier, p 257Google Scholar
  41. Sun X, Wang P (2005) How old is the Asian monsoon system? Palaeobotanical records from China. Palaeogeogr Palaeoclimatol Palaeoecol 222:181–222CrossRefGoogle Scholar
  42. Thewissen JGM, Gingerich PD, Russell DE (1987) Artiodactyla and Perissodactyla (Mammalia) from the Early–Middle Eocene Kuldana Formation of kohat (Pakistan). Contributions from the Museum of Paleontology, University of Michigan, vol 27, pp 247–274Google Scholar
  43. Thewissen JGM, Williams EM, Hussain ST (2001) Eocene mammal faunas from Northern Indo-Pakistan. J Vertebr Paleontol 21:347–366CrossRefGoogle Scholar
  44. Tong Y, Zheng S, Qiu Z (1995) Cenozoic mammal ages of China. Vertebrata PalAsiatica 33:290–314Google Scholar
  45. Tsubamoto T, Takai M, Shigehara N, Egi N, Tun ST, Aung AK, Maung M, Danhara T, Suzuki H (2002) Fission-track zircon age of the Eocene Pondaung Formation, Myanmar. J Hum Evol 42:361–369PubMedCrossRefGoogle Scholar
  46. Tsubamoto T, Tun ST, Egi N, Takai M, Shigehara N, Soe AN, Aung AK, Thein T (2003) Reevaluation of some ungulate mammals from the Eocene Pondaung Formation, Myanmar. Paleontol Res 7:219–243CrossRefGoogle Scholar
  47. Tsubamoto T, Takai M, Egi N (2004) Quantitative analyses of biogeography and faunal evolution of Middle to Late Eocene mammals in East Asia. J Vertebr Paleontol 24:657–667CrossRefGoogle Scholar
  48. Tsubamoto T, Egi N, Takai M, Sein C, Maung M (2005) Middle Eocene ungulate mammals from Myanmar: a review with description of new specimens. Acta Palaeontol Pol 50:117–138Google Scholar
  49. Tsubamoto T, Egi N, Takai M, Shigehara N, Suzuki H, Nishimura T, Ugai H, Maung-Maung, Sein C, Tun ST, Soe AN, Aung AK, Thein T, Htike T (2006) A summary of the Pondaung fossil expeditions. Asian Paleoprimatology 4:1–66Google Scholar
  50. Turner HN (1849) On the evidences of affinity afforded by the skull in the ungulate Mammalia. Proc Zool Soc Lond 17:147–158Google Scholar
  51. Vislobokova IA (2004) A new representative of the family Raoellidae (Suiformes) from the Middle Eocene of Khaichin-Ula 2, Mongolia. Paleontol J 38:102–107Google Scholar
  52. Walsh SL (2000) Bunodont artiodactyls (Mammalia) from the Uintan (Middle Eocene) of San Diego County, California. Proc S Diego Soc Nat Hist 37:1–27Google Scholar
  53. Zdansky O (1930) Die alttertiären Säugetiere Chinas nebst stratigraphischen Bemerkungen. Palaeontol Sin 6:5–84Google Scholar
  54. Zheng J (1978) Description of some Late Eocene mammals from Lian-Kan Formation of Turfan Basin, Sinkiang. Memoirs of the Institute of Vertebrate Paleontology and Paleoanthropology Academia Sinica 13:115–125Google Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Grégoire Métais
    • 1
  • Aung Naing Soe
    • 2
  • Laurent Marivaux
    • 3
  • K. Christopher Beard
    • 1
  1. 1.Section of Vertebrate PaleontologyCarnegie Museum of Natural HistoryPittsburghUSA
  2. 2.Department of GeologyPa-an UniversityPa-anMyanmar
  3. 3.Laboratoire de Paléontologie, Institut des Sciences de l’Evolution (UMR-CNRS 5554)Université de Montpellier IIMontpellierFrance

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